Joon Won Lee#14694

Joon Won Lee

Partner, Lee & Ko
Joon Won Lee is an international arbitration lawyer with extensive experience in disputes across a wide range of sectors, including construction, infrastructure, energy, defense, and pharmaceuticals, as well as corporate and foreign investment matters. He represents sovereigns, state-owned entities, and private clients in international commercial and investment arbitrations. He also regularly handles arbitration-related court proceedings, including applications for interim relief, recognition and enforcement proceedings, and actions to set aside arbitral awards.
 
Before joining Lee & Ko, Joon Won served as a public service advocate in the International Legal Affairs Division of the Korean Ministry of Justice. In that role, he worked exclusively on ICSID and UNCITRAL investment arbitration cases brought against the Republic of Korea and advised the Korean government on matters of public international law.
 
His practice also covers international investment law, private international law, overseas construction, energy and nuclear power projects, and international trade measures. He frequently advises clients on complex cross-border transactions and negotiations.
 
Joon Won currently serves as a Young ICSID Regional Delegate for Asia-Pacific, supporting initiatives and programs related to investment arbitration across South Asia, East Asia, and the Pacific.
Contributed to

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2026 KCAB Rules–Awards, costs, scrutiny, and termination
2026 KCAB Rules–Awards, costs, scrutiny, and termination
Practice Notes

AwardsTime limits for rendering awards and forms of awardsThe formal requirements for awards are set out in Article 37 of the 2026 Rules. Pursuant to Article 37.1, all awards shall be in writing and, unless otherwise agreed, must state reasons. Awards must be dated and signed, and are deemed made at the place of arbitration (Article 37.3). Electronic signatures are permitted with party agreement (Article 37.4), and counterparts may be used unless the parties agree otherwise (Article 37.5). Each award is final and binding, and the parties undertake to comply without delay (Article 37.6). In practice, tribunals often issue separate awards on discrete issues where this supports procedural efficiency, which is expressly contemplated by Article 37.2.Time limits are governed principally by Article 39. Article 39.1 requires the tribunal, as soon as possible after the last hearing or receipt of final submissions, to inform the Secretariat and the parties of the date on which it

2026 KCAB Rules–Commencing and structuring the arbitration
2026 KCAB Rules–Commencing and structuring the arbitration
Practice Notes

Request for arbitrationA party may initiate an arbitration under the 2026 Rules by submitting its Request for Arbitration and supporting documents to the KCAB Secretariat (Article 8.1).The Request for Arbitration serves as the foundational document of the proceedings and must be drafted to include comprehensive details regarding the parties, such as their full contact information, place of incorporation for businesses, or the nationality and residence for individuals (Article 8.2(a), (b)). Furthermore, the Claimant is required to clearly articulate the nature and circumstances of the dispute, the specific relief being sought, and an estimate of the amounts claimed to ensure that the Secretariat can properly assess the scale of the matter (Article 8.2(c), (d)).Beyond the merits of the case, the Request for Arbitration must also address the procedural aspects of the arbitration. The Claimant must specify any existing written agreements or provide its own proposals regarding the place and language of the arbitration,

2026 KCAB Rules–Evidence, hearings, and interim measures
2026 KCAB Rules–Evidence, hearings, and interim measures
Practice Notes

Evidence and document productionThe 2026 Rules largely preserve the evidentiary framework of the 2016 Rules. Under Article 27, the tribunal retains the authority to order the production of documents, exhibits or other evidence, and to order that property, sites or objects under a party’s control be made available for inspection (Article 27.1). Each party continues to bear the burden of proving the facts on which it relies (Article 27.2), and the tribunal retains the authority to determine the admissibility, relevance, materiality, and weight of evidence (Article 27.3).Notably, the requirement under the 2016 Rules for parties to submit a summary of intended evidence has been deleted in the 2026 Rules. Similar provisions were once found in earlier versions of other institutional rules, such as the 2008 ICDR International Arbitration Rules, but have likewise been deleted. This change aligns with international practice in favor of a more streamlined approach to evidence, reducing procedural

2026 KCAB Rules–Expedited, fast-track, emergency, and early determination procedures
2026 KCAB Rules–Expedited, fast-track, emergency, and early determination procedures
Practice Notes

Expedited procedureScope and applicability of the expedited procedureThe Expedited Procedure under Chapter 6 of the 2026 Rules applies (i) where the amount in dispute does not exceed KRW 500,000,000 for arbitration agreements concluded before 1 January 2026; (ii) where the amount in dispute exceeds KRW 500,000,000 but does not exceed KRW 4,000,000,000 for arbitration agreements concluded on or after 1 January 2026; or (iii) where the parties agree to be subject to it (Article 45.1). The increase of the monetary threshold to KRW 4,000,000,000 represents a significant expansion over the 2016 Rules, which limited the Expedited Procedure to claims not exceeding KRW 500,000,000. The practical impact of this change is that the Expedited Procedure will apply to more disputes.Determination of applicability and institutional mechanismThe 2026 Rules also introduce a structured mechanism for determining whether the Expedited Procedure applies. As an initial matter, the Expedited Procedure does not apply where

2026 KCAB Rules–Introduction
2026 KCAB Rules–Introduction
Practice Notes

KCAB InternationalThe Korean Commercial Arbitration Board (‘KCAB’), established in 1966, is the sole arbitral institution that is statutorily authorised to administer commercial arbitration under the Korean Arbitration Act (the Arbitration Act). KCAB International, established in 2018, is an independent division of the KCAB that administers international arbitration cases as well as international mediation matters.KCAB International handles a broad range of cross-border commercial disputes, with parties from over 20 jurisdictions filing cases in 2024. According to the most recent available statistics, the KCAB reported 48 international arbitration cases out of a total caseload of 349 in 2024. Across the KCAB’s total caseload, construction (35%) and information technology (16.6%) disputes accounted for the largest proportion of cases filed.Adoption and applicability of the 2026 KCAB RulesThe 2026 KCAB International Arbitration Rules (the ‘2026 Rules’) came into effect on 1 January 2026, marking the first revision of the KCAB International Arbitration Rules (the ‘Rules’) since 2016. The 2026

2026 KCAB Rules–Multi-party, multi-contract, and complex proceedings
2026 KCAB Rules–Multi-party, multi-contract, and complex proceedings
Practice Notes

Joinder of additional partiesThe 2026 Rules introduce significant changes to the regime governing joinder of additional parties. Under the 2016 Rules, consent of the additional party to joinder was required in all cases and only the tribunal could determine whether an additional party could be joined (2016 Rules, Article 21.1). The 2026 Rules allow joinder of an additional party without the additional party’s consent in certain cases, provided the additional party is prima facie a party to the same arbitration agreement (Article 21.1(b)). The 2026 Rules also introduce a mechanism to request joinder before the tribunal is constituted and give the Court the power to determine the request for joinder before the tribunal is constituted.In this respect, unlike some institutional rules which only permit joinder before the constitution of the tribunal, the approach adopted by KCAB allows for joinder of an additional party after the constitution of the tribunal provided it is deemed

2026 KCAB Rules–Tribunal constitution, powers, and case management
2026 KCAB Rules–Tribunal constitution, powers, and case management
Practice Notes

The KCAB International Arbitration CourtA significant change introduced by the 2026 Rules is the establishment of the Court.The Court independently performs case administrative functions referred to in the 2026 Rules, while the Secretariat provides assistance and supports the day-to-day administration of cases (Article 1.3). This represents a structural shift from the prior framework, under which case administrative functions were carried out primarily by the Secretariat.The Court is headed by its Chairperson and is composed of internationally recognised arbitration practitioners from multiple jurisdictions. This court-based governance model is intended to enhance consistency, predictability, and institutional oversight in the administration of arbitrations. In this respect, the Court aligns KCAB International more closely with other arbitral institutions such as ICC, LCIA, and SIAC.The Court exercises decision-making authority in matters including the appointment, challenge and removal of arbitrators, as well as other case-related determinations.Tribunal constitutionQualificationsFirst, when the Court appoints an arbitrator,

Practice Area

Panel

  • Contributing Author

Qualified Year

  • 2017

Experience

  • Lee & Ko (2020 - Present)
  • Korean Ministry of Justice (2017 - 2020)

Membership

  • Young ICSID
  • The Korean Council for International Arbitration
  • Korean Association for Artificial Intelligence and Law

Qualification

  • Admission to the Korean Bar (2017)

Education

  • J.D., Seoul National University School of Law (2017)
  • LL.B. (Hons), Seoul National University (2014)

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